Mechanistic-Based Evaluation of Performance Thresholds for Balanced Mix Design Asphalt Surface Mixtures

Details

• Creators:
  Habbouche, Jhony ; Boz, Ilker ; Diefenderfer, Stacey D ; Underwood, Benjamin Shane ; Othman, Omar
• Corporate Creators:
  Virginia Transportation Research Council (VTRC)
• Corporate Contributors:
  Virginia. Department of Transportation ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  • Asphalt mixtures
  • Empirical methods
  • Engineered materials
  • Mechanistic-empirical pavement design
  • Mix design
  • Structural design
• Publication/ Report Number:
  FHWA/VTRC 26-R08
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States;Virginia
• Edition:
  Final Report
• Corporate Publisher:
  Virginia Transportation Research Council (VTRC)
• Abstract:
  As part of the Virginia Department of Transportation (VDOT) balanced mix design (BMD) implementation process, VDOT selected three quick, simple, and practical empirical tests to evaluate asphalt mixtures against different modes of distress for design and acceptance. These tests include the Cantabro test, with a mass loss limit of 7.5%; the indirect tensile cracking test, requiring a minimum cracking tolerance index of 70; and the asphalt pavement analyzer (APA) rut test, with a maximum rut depth of 8.0 mm. These tests assess the potential performance in durability, cracking, and rutting of asphalt mixtures, respectively. In 2021, performance-based specifications were evaluated to fully implement BMD in Virginia. Additional mixture tests confirmed the reasonableness of the established performance criteria. However, further investigation was advised to assess correlations between the Cantabro, APA rut, and indirect tensile cracking, tests and fundamental tests, mechanistic-empirical (ME) simulations, and field performance, ensuring suitable threshold criteria for BMD implementation.
• Format:
  PDF
• Funding:
  120747
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/85834/dot_85834_DS1.pdf
• File Type:
  [PDF - 3.54 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:0098850fab5c4cf232c8b31e03c235396f82f795bfb03500b3a4228f985da5a9e4ee529022d8a83b93c840e182ed6c396afbe1bafade7f033d2c9fb23ced9b45